Scale



BEST AVAILABLE COP" 24Sheets-Sheet 1.

(No Model.)

D. HALLOGK.

WEIGHING SCALE.

Patented Sept. 1, 1885.

u. mans mwqnpm WMW BEST AVAlLABLE COP (No Model.) 7 2 sheets-sheet 2..

D. HALLOOK. v

WEIGHING SCALE.

N s25,5s4. I Patent ed Sept. 1, 1885.

3S 95M am/1 6M427 y W N. PETER$. PbowLirhognaMr. Wuhinflm. D. C-

- YUNITED STATES P ENT ()rrron.

BESITFAVAILABLE COP" invention.

the line 1 2, Figg 1.

' the following is aspeeification.

DAVID HALLOCK, or NEW YORK, a. Y.

{35hr 'wElGl-l-l GJSCALE.

v SPECIFICATION forming part of Letters Patent No. 325,534, dated September 1, 1885.

Application filed Mays, 1885. (No model.)

Be it known that L'DAYID HALLOCK, a citi- Zen of the United States, and a resident of New York city, New York, have invented certain Improvements in Weighing-Scales, of which My invention consists-of certain improvements -in the construction of weighing-scales,

more particularly of that class in which an oscillating indicator is used.

In the accompanying drawings, Figure 1 is a side view of'a scale adapted for postal or letter-weighing purposes and embodying my Fig. 2 is a longitudinal section of the same. Fig.3 is a transverse section on Fig; 4.1i's a perspective view in section of the jack and its weights. and stepped rack. Fig. 5 is a plan view of the scale with the pan removed. j Fig. 6 is a perspectiveview in section of an air-check with its parts detached. A is the frame,with two upright posts; a a,

"liavi11g*at their upper ends bearings for the knifeedges'b of the oscillating beam 13, the

gradirated 'a'rnr of which is preferably of rectangular section and receives the movable weight The opposite end of the beam is bifurcated, as shown in the plan view, Fig; 5,

and ,carries' theknife-edgesd, Figs. 1 and 3,

3 ble jaclrD, carrying the pan or receptacle to which findbeai'il'igs in and support the movarec'eiv e the articlesto be weighed. This jack is 'in the form of a'yoke, as shown in Fig. 13,

andcarrie's a central dowmvardly-projeeting stem, (1, connected at its lower end by a guide- "man or link, x, to lugs y on'the fixed portion 'of the frame.

The'y'oke or' jack D passes through slots a in the box-like portion A of the frame, a nd the latter-on opposite sides of this yoke forms asupport for the weights. In the drawings the upper face of the support has aseries of steps, 8, one slightly above the other. When the jack is in its lowest position, the opposite ends of all the weights E will rest upon the support, but when the jack is raised to its highest position these weights E will all be raised clear of the support. In other words, when the scale is balanced the pan will be carrying all the weights, but as soon as the pan descends when an article is placed therein the jack being connected to that end of the bearing will descend with the cessively, according to the weight of the article placed in the pan. This action is the reverse of that of the scale shown in the patively picked up as the pan descends. sired, the face of the jack D may he stepped- "with the same effect.

guide, F, which is provided on its opposite inner sides with tapering ribs f-to guide the weights. Thehood is also tapered on the inside and the weights are correspondingly ta- -so that when" the 'weights'descend there will he no frictional'cont-act between the weights and hood.

the graduated arm of the'seale-beam itself acts as an indicator, having its point adapted to act in connection with the graduated scale -R, Figs. 1 and 2, mounted on the end of an 'arm, r, of the frame. I

The scale shown in the drawings is adapted more particularly for postal use, and for this purpose this indicator-scale R is shown as having four divisions for the half-ounces for weighing letters, while the beam is graduated into two-ounce spaces, so that in weighing movement of the weight W is" needed, while for over two ounces and less than four the weight -W is moved one space from the pivoting point, and soon.

When the scale is balanced-that is to say, when the jack is in the raised position, supporting all thejweights E clear of the rack the indicator will point to zero; but the mobut a fractional part of half an .ounce the pan will descend until the first weight E comes into contact with the corresponding part of the rack, when the beam will point to the first or half-ounce division of the scale and so indicate the weight on which postageis payable on the letter.

\Vhen an article weighing over half an'ouncc, but not more than one ounce, is placed on the pan thclatter will descend and with it the jack,

pan and relieve itself of the weights E suc-' In the construction shown in the drawingsv ent'granted to me February 3, 1885, 311,745, and in which the weightsare success- If de-. 7

and the support or rack A have a plain face Over the tops of the weights is a hood or" pered on all sides, as shown in Figs; 2 and 3, I

letters or packages of two ounces or less no ment a letter, for instance, is placed in the-pan the latter will descend, and if the letter weigh which will move away from the first weight and descend until the second weight comes into contact with the rack, as shown in Fig. 3, when the beam will point to the ounce-mark on the indicator, as shown in Fig. 1. So for any other weights of letters or other articles the beam will turn always to one or other of the full-unit divisions on the indicator, thus showing the Weight on which the rate of postage is payable, even if the letter or other ar ticle weigh a fraction less, but nevertheless demands that rate of postage. In other words, owing to the automatic weights and the bal ancing of the scale, as described, the jack will be relieved of none of the weights until it passes the first unit-mark, and consequently fractional parts will be indicatedas full units.

Multiples of the smaller units on the indieator scale R are found on the graduations of the beam, and by moving the weight W thereon heavier articles may be weighed just as readily, and in mnjunction with the automatic weights and indicator.

An air-check is combined with the scale to prevent undue oscillation of the indicatorand to bring the latter to a state of rest immediately after an article to be weighed has been thrown onto the pan of the scale. In theconstruction herein illustrated it consists of a box, H, carried by the jack 1), and having adapted thereto one or more diaphragms, J,

, which in the present instance are shown as resting on a cup or support, I, on the top of the g i fixed portion of the frame (in this case the hood F) when the frame is at rest. These diaphragms are preferably cut out of sheet metal, and if there are more than one they are separated a slight distance from each other by suitable projections, j, which may be teats stamped up from the diaphragms themselves.

. In Figs. 2 and 3 I have shown three of these be free to have a lateral motion to accommodate themselves under all circumstances to the movements of the box, for otherwise the close ness of theperipheriesof the diaphragms to the walls of the box is such that if they weresecu red to their support the parts would jam and prevent proper actiomwhile on the other hand in an air-check of this character this closeness of the parts is necessary to give the proper action.

BEST AVAILABLE COP" If desired, the closed top of the box H may be provided with a smallperforation or outlet, h, to ease the movements of the parts.

I do not wish to confine myself to the precise construction of air-check above described, as other forms and arrangements may be used with similar effect. Thus the box H may be applied to the lower end of the stem (1 of the jack instead of being carried by the upper end of the jack, and the loose diaphragms J 'in this case will be carried by a support mounted on a transverse plate secured to the framebeneath the box H. v

I' prefer in all cases to use more than one diaphragm, as I find this to be more effective in its action, the use of two diaphragms, for 7 5 instance, giving almost double the retarding effect of asingle diaphragm.

I claim as my invention 1. A weighingscale having an indicator providedwith an air-check, consisting of abox so and a loose diaphragm or diaphragms therein, substantially as described.

2. The combination of the oscillating beam of aweighing-scale and a box controlled thereby, with a support and loose diaphragms 8 adapted to said box and normally resting on the support, as set forth.

3. The combination of the beam of aweighing-scale and pan carried thereby, with ajack connected to the pan end of the beam, aseries c of automatic weights normally carried by the .jack, and a support to relieve the jack of the weights successively as the pan descends, substantially as specified.

4. The combination of the beam and indi- 5 cator-scale of a weighing-scale, with a jack carried by the pan end of the beam, a series of automatic weights normally carried by the jack, and a support for the weights when relieved from the jack; thebeambeing balanced, 10o substantially as described, whereby fractional parts will be indicated as full units.

5, A weighingscale having a graduated bea'm provided with a movable weight, and an indicator scale and a series of automatic :0 5 weights, the latter indicating the small units, while the graduations on the beam are multiples of the small units, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two sub- 1 1o scribing witnesses.

DAVID HALDO'GK.

\Vitnesses:

WILLIAM F. DAVIS, HARRY SMITH. 

